![]() ![]() #1 – Scan For Trouble Codesįirst, there’s a good chance your vehicle has a check engine light at this point too, and the first thing you want to do is see what that code is telling you. Sure, you can take it to a mechanic, but even if that’s your plan of action we highly recommend completing the following steps so you know what’s going on and they don’t end up trying to pull a fast one on you and costing you more money. This is obviously the worst-case scenario, but it’s why you don’t want to ignore a rotten egg smell in your car! How to Get Rid of the Rotten Egg Smell?Īlright, you know you have a rotten egg smell in your car, now it’s time to figure out what you need to do to fix it. If the catalytic converter is clogged it can start to overheat, and if it gets too hot it can catch on fire. While that might be the case for most cars, because of the potential downside we highly recommend against it. You might think that since a rotten egg smell likely comes from an emissions component you can drive around for a while without worrying about it. Or maybe you’re going through a bad breakup and your ex cracked an egg in a hidden part of your car.Įither way, sometimes if you smell rotten eggs in your car, it’s because there’s a rotten egg, spoiled milk, broccoli, or some other rotten groceries in there! Can I Continue Driving My Car? While it’s not the most likely scenario, sometimes groceries slide around your car and get lost under some seats. Sometimes a rotten egg smell is just that, a rotten egg. Related: How to Get Skunk Smell Out of Car #5 – Forgotten/Hidden Groceries The problem is when you start your car it can end up killing them, and then their bodies start to decompose.Īs you can imagine this doesn’t smell good, and it might be the reason you have an unpleasant odor following your car around. When the weather gets cold, animals look for a warm place to sleep, and engine bays and exhaust systems often fit the bill. One that happens more often than you might think is a dead animal (usually a mouse or rat) in your engine bay, exhaust system, HVAC system, or car interior. While everything we’ve highlighted up to this point has been mechanical issues, there are a few other possible explanations. If this is happening to your vehicle you’ll need to change the transmission fluid, but there’s also a good chance you’ll need to replace some gaskets or seals too. When that happens, it can put off a wide array of smells, but some that are often described are rotten eggs or sour milk. ![]() The exact service intervals are laid out in your owner’s manual, but if you don’t change it out when you should, it can wear out seals and start to seep into places it shouldn’t be. If you drive an older vehicle, especially a manual, chances are you need to change out the transmission fluid every once in a while. This isn’t an either/or option here, it’s just a matter of whether or not you need to replace both components so your vehicle’s new catalytic converter doesn’t wear out prematurely. Keep in mind that even if you have a bad fuel pressure sensor, if you’re getting a rotten egg smell, you’ll still need to replace the catalytic converter too. ![]() This is especially true if it’s happening before you would expect the catalytic converter to give out, which is about ten years or 200,000 miles. Related: Why Does My Car Smell Like Gas? #2 – Faulty Fuel Pressure SensorĪ very common occurrence when you’re noticing a rotten egg smell coming from your vehicle is that a faulty fuel pressure sensor is sending too much fuel into the system and it’s clogging up your catalytic converter since it can’t process that much at once. With a clogged catalytic converter, instead of turning into water or steam, the hydrogen sulfide turns into sulfur dioxide, which creates the rotten egg smell. However, over time these harmful chemicals and gasoline can clog up portions of the catalytic converter, and when that happens it can’t convert it the way it needs to. When everything is working properly with your vehicle’s catalytic converter it converts toxic chemicals into harmless H2O compounds – otherwise known as water or steam. This is by far the most common cause of a rotten egg smell in your vehicle. Whether you plan on fixing it yourself or just want to ensure your mechanic isn’t taking advantage of you, here are five different causes of a rotten egg smell in your car. And before you rush off to a mechanic to have them diagnose it and fix it for you, it’s worth getting a better understanding of what’s going on. If your car is starting to give off a rotten egg smell, there are a few potential causes out there. How to Get Rid of the Rotten Egg Smell?.Why Does My Car Smell Like Rotten Eggs?.
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